blackboard tree (alstonia scholaris) in bloom with cluster of small white flowers.

alstonia scholaris blackboard tree devil39aph39s scholar milkwood evergreen tropical family apocynaceae ornamental toxic traditional medicine diseases leaves whorls leathery corolla white tube-like flowers fragrant fragrance bitter milky sap convocation graduates pencils coffins postgraduates visva bharati university rabindranath tagore wood net floats household utensils trenchers corks theravada buddhism buddha enlightenment astringent tonic herbal bark indian subcontinent india southern china asia australasia